PRIME Observation Log 2025/08/03

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Raw Log (Time is in SA time)
Ramp Log (Time is in UT)
CCMain Error Log (Time is in SA time)
Observation Log (Time is in UT)

Date: 2025/08/03
Local observer: Togo
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 114.00011 +- 0.00130 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:24:52
Morning 07:00:35
Science Observation
(Sun altitude < -10°)
Start 18:47:01
End 06:38:29
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 18:47:01
End 03:17:53


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 07:12:16 11:51:28 0.608
GB Time 07:12:16 08:30:52 0.846
Non-GB Time 00:00:00 03:20:35 0.000


Institute Statistics
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 4236 03:21:54 07:12:16 0.467


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
Bulge 4164 03:18:29 07:04:39 0.467
SKY 72 00:03:25 00:07:36 0.451


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB74_test OJ 48 00:02:17 00:16:00 0.143
GB74_dither OJ 48 00:02:17 00:04:38 0.493
GB75_dither OJ 48 00:02:17 00:04:35 0.498
GB76_dither OJ 48 00:02:17 00:04:32 0.503
GB77_dither OJ 48 00:02:17 00:04:35 0.498
GB78_dither OJ 48 00:02:17 00:04:35 0.498
GB79_dither OJ 48 00:02:17 00:04:38 0.493
GB80_dither OJ 48 00:02:17 00:04:32 0.503
GB97_dither OJ 48 00:02:17 00:04:38 0.493
GB96_dither OJ 48 00:02:17 00:04:35 0.498
GB95_dither OJ 48 00:02:17 00:04:35 0.498
GB94_dither OJ 48 00:02:17 00:04:32 0.503
GB93_dither OJ 48 00:02:17 00:04:35 0.498
GB92_dither OJ 48 00:02:17 00:04:38 0.493
GB91_dither OJ 48 00:02:17 00:04:32 0.503
GB108_dither OJ 48 00:02:17 00:04:35 0.498
GB109_dither OJ 48 00:02:17 00:04:38 0.493
GB110_dither OJ 48 00:02:17 00:04:38 0.493
GB111_dither OJ 48 00:02:17 00:04:35 0.498
GB112_dither OJ 48 00:02:17 00:04:35 0.498
GB113_dither OJ 48 00:02:17 00:04:38 0.493
GB114_dither OJ 48 00:02:17 00:05:39 0.404
GB76_test OH 36 00:01:42 00:06:26 0.266
GB76_dither OH 312 00:14:52 00:31:12 0.477
GB77_dither OH 288 00:13:43 00:28:20 0.484
GB78_dither OH 288 00:13:43 00:28:12 0.487
GB94_dither OH 288 00:13:43 00:28:15 0.486
GB111_dither OH 288 00:13:43 00:28:20 0.484
GB110_dither OH 288 00:13:43 00:28:45 0.477
GB109_dither OH 144 00:06:51 00:14:00 0.490
GB92_dither OH 72 00:03:25 00:07:00 0.490
GB93_dither OH 72 00:03:25 00:07:03 0.487
GB75_dither OH 144 00:06:51 00:14:11 0.484
GB112_dither OH 144 00:06:51 00:14:06 0.487
GCsky 72 00:03:25 00:07:36 0.451
GB71_dither OH 24 00:01:08 00:02:19 0.493
GB72_dither OH 24 00:01:08 00:02:21 0.484
GB73_dither OH 24 00:01:08 00:02:24 0.474
GB90_dither OH 24 00:01:08 00:02:24 0.474
GB89_dither OH 24 00:01:08 00:02:30 0.456
GB88_dither OH 24 00:01:08 00:02:27 0.465
GB105_dither OH 24 00:01:08 00:02:21 0.484
GB106_dither OH 24 00:01:08 00:02:21 0.484
GB107_dither OH 24 00:01:08 00:03:15 0.352
GB79_dither OH 144 00:06:51 00:14:37 0.470
GB60_dither OH 72 00:03:25 00:07:08 0.480
GB95_dither OH 72 00:03:25 00:07:03 0.487
GB113_dither OH 72 00:03:25 00:07:03 0.487
GB80_dither OH 24 00:01:08 00:02:21 0.484
GB97_dither OH 24 00:01:08 00:02:21 0.483
GB96_dither OH 24 00:01:08 00:02:21 0.484
GB114_dither OH 24 00:01:08 00:02:38 0.432
GB108_dither OH 24 00:01:08 00:02:19 0.493
GB91_dither OH 24 00:01:08 00:02:16 0.503
GB74_dither OH 24 00:01:08 00:02:24 0.474










Stats so far in 2025
Monthly observed fraction so far in 2025
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 103:35:29 259:42:08 0.399
Feb 53:54:42 259:20:18 0.208
Mar 158:57:47 319:07:20 0.498
Apr 161:02:39 338:08:53 0.476
May 244:24:55 372:31:50 0.656
Jun 209:59:39 370:50:11 0.566
Jul 224:49:02 377:25:14 0.596
Aug 27:31:02 35:38:22 0.772

Observed time so far in 2025
- Total time of each institute is calculated by the following
    [All observation time in 2025] = [Observed time so far] + [Remaining time in the future]
    [Remaining time in the future] = [Clear sky fraction] x [Remaining night time (Sun alt. < -10°)]
    
    [GB observation time in 2025] = [Observed GB time so far] + [Remaining GB time in the future]
    [Remaining GB time in the future] = [Clear sky fraction] x [Remaining GB night time (Sun alt. < -10° & GB alt. > 22°)]
    
    [Non-GB observation time in 2025] = [All observation time in 2025] - [GB observation time in 2025]
    
    [OU, NASA, ABC time in 2025] = 0.24 x [Non-GB observation time in 2025]
    [SAAO time in 2025] = 0.28 x [Non-GB observation time in 2025]
    
- ALLSKY time is equally distributed to each institute
- ToO time is distributed to each institute based on input of observer of each date
- Clear sky fraction of (0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5) is assumed for (Jan, ..., Dec) in the calculation of the remaining observation time
All
(hh:mm:ss) 		GB
(hh:mm:ss) 		Non-GB
(hh:mm:ss) 		SAAO
(hh:mm:ss) 		OU
(hh:mm:ss) 		NASA
(hh:mm:ss) 		ABC
(hh:mm:ss) 		CALIB
(hh:mm:ss)
Total 1906:34:42 985:45:31 920:49:11 257:49:46 220:59:48 220:59:48 220:59:48 168:02:06
Observed 1184:02:54
(62.10%)		 750:55:08
(76.18%)		 433:07:45
(47.04%)		 82:46:14
(32.10%)		 100:38:32
(45.54%)		 184:25:37
(83.45%)		 65:17:21
(29.54%)		 168:02:06
(N/A)
Remaining 722:31:48
(37.90%)		 234:50:23
(23.82%)		 487:41:25
(52.96%)		 175:03:31
(67.90%)		 120:21:15
(54.46%)		 36:34:11
(16.55%)		 155:42:26
(70.46%)		 00:00:00
(N/A)











Camera status (2025/08/03)



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